[Endorra]

I generally roll HE and do 25/5 Cha/Int. I don't think it's worth agonizing too much over alternatives.

My line of reasoning:

1) CHA is obviously the most desirable in terms of Quality of Life. The more base you have, the less itemization you need, and the more you can spare for hp/ac. Higher base also helps make CR's less daunting, although that can also be mitigated with banked "oh shit" gear.

2) 5 STR is what? 1 more fine steel item, maybe? You have low STR. Use the buff(s) and get WR bags.

3) 5 STA is what? 12 hp at 60? Just put the points in INT and itemize well.

The ONLY time I think it's worth doing anything else is on an Erudite, I would go with 25 CHA/5 AGI to avoid the naked AC penalty.